Improved composition martingale-ring



0. B. BRISTOL. COMPOSITION MARTINGALB RING.

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5mm gm .ggggggn sw CHARLES B. BRISTOL, OF NEW HAVEN, CONNECTICUT, Letters Patent No. 87,240, dated Februwry 23, 1869,

nmmovm: comrosmon MARTmG-A-LE-RING.

The Schedule referred to in these Letters Patent and making past of the same.

To all whom it may concern.-

Be it known that 1, CHARLES B. BRISTOL, of New Haven, in the county of New Haven, and State of (lounecticnt, have invented a new Improvement in Martingale-Rings; and I do hereby declare the, following, when taken in connection with the accompanying drawings, and the letters of refierence marked thereon, to be a full, clear, and exact description of the same, and

which said drawings constitute part of this specifics rial than metal, and yet be sufliciently light to be unobjectionable. To this end, My invention consists in constructing a hollow ring I sufliciently thick only to sustain itself, then coating the ring with rubber or similar material, and completing the whole by a curing-process, according to the I prefer the materialkuown asha-rd-rubber componndi In order to the clear understanding of my improvewent, I will fully describe the same, as illustrated in the accompanying drawings.

I first form a ring, B, from a tube or otherwise, .so

that the ring be hollow, (the metal may be very thin,

as the strain upon the ring is very slight;) then coat the ring with any snrmblematcrial, as seen in figs; 2 and 3, preferring hard rubber, and finish the whole by a curing-process, adapted to the nature of thematerial with which the ring is covered.

I am aware that metallicrings have been covered with composition, but such rings have been made solid,

and to these the same objections exist as to all metal rings, whereas, in my invention, the ring is very little if any heavier than the common bone or ivory ring,

and is much stronger than either, and has the appear-- ance of either one or the other, according to the color of the coating.

Having thus fully described my invention,

What I claim asnew and useful, and desire to secure by Letters Patent, is-

As an article of manufacture, the herein-described martingale-ring, consisting of the hollow ring B, covered and finished substantially as set forth.

CHAS. B. BRISTOL.

Witnesses:

J. H. SHUMWAY, A. J. 'lmsnrs. 

